Nut-lock.



J. H. HAZEL.

NUT LOGK.

APPLICATION HLED DEC-29, 1914.

Patented May 16, 1916. v

JOHN H.- HAZEL, OF LOCKIORT, NEW YORK.

NUT-LOCK.

Specification of Letters Patent! Patented May 16, 1916.

- Application filed Decex'nber29, 1914. Serial No. 879,529.

ments in means for looking a nut upon a bolt, and resides in theconstruction, combination and operation of parts set forthin thefollowing :specification and falling within the scope of the appendedclaim.

In the drawing: Figure 1 is a plan view of the locking elementconstructed in accordance with the present invention, Fig. 2

is a similar view but illustrating the device arranged upon a nut andbolt, Fig. 3 is a transverse sectional view on the line 3-.-3 of Fig. 2,and Fig. 4 is a side elevation of the same. Fig. 5 is a perspective viewof a tool used in connection with my invention.

Referring now to the drawings in detail 1 designates a bolt of theordinary construction having its shank provided with a longitudinallyextending channel 2, which in-' tercepts its threads.

3 designates a nut for the bolt. This nut is of the ordinary or usualconstruction, except that the same has its sides or faces provided withlongitudinally extending grooves which are parallel with the axial planeof the bore of said nut. The grooves are of a width corresponding withthe radial arms 6 provided upon a locking device 7. This locking deviceincludes a Hat rounded portion or'body 8 having .a central bor'eprovided with an inwardly projecting lug 9 that is adapted to extendinto the channel of the bolt, and the arms of the said member areadapted to be bent within the longitudinal grooves upon the faces of thenut. Preferably and as illustrated in the drawings, the arms of thelocking element have their ends outturned so that the same do notcontact with the inner'walls of the grooves, and

whereby a Wrench1W shown in Fig. 5 hav ing an inner periphery whichcorresponds in shape to the substantially rectangular nut and an outerperiphery which is preferably round in cross section may be readilyinserted inside the outturned ends of the locking element to force theprongs or arms of the same out of contact with'the walls of the groovesin the nut and permit of the ready removal of the nut from the bolt.

From the above description, taken in connection with the accompanyingdrawing, the simplicity of the device as well as the advantages thereofwill, it is thought, be perfectly apparent to those skilled in the artto which such invention appertains without further detailed description.

Having thus described the invention, what I claim is:

A nut lock consisting of a threaded bolt, said bolt being formed with alongitudinal groove intersecting the threaded portion, a nut engagingthe threaded portion of said bolt, said nut being formed upon each ofits sides with a groove having its outer edge spaced inwardly from theouter face of the nut whereby each groove will be of a lesser lengththan the surface upon which it is formed, and a locking memberconsisting of a rounded portion having an opening through which the boltmay be passed, said circulanportion being formed with an in; turned lugadapted to take into the groove of said bolt and be guided therein, and'a plurality of radially extending arms formed upon said rounded portion,said rounded portions adapted to engage the back of said nut and havingtheir arms bent substantially at right angles to their length and withtheir bent portions disposed partlyiin each of said grooves, each ofsaid bent arms being deflected outwardly of the nut at the innermostedge of each groove whereby to provide means for deflecting said armsfrom the grooves.

MR. JOHN H. HAZEL.

